mufka,
The contivity is a security device so if there is anything wrong at all it needs to notify you! Apart from the internal security logs, it also indicates security status by way of the LEDs on the front panel.
Green means normal operation, amber means the system is booting up or that there is a minor problem, and red means there is a major problem such as the front panel being removed.
Amber status can occur quite often, if someone tried to connect using the wrong password, the LED will turn amber for a short period. If the box is not configured properly or if an important service goes down (such as DNS), then it alerts you to the condition by turning the LED amber until such time that you take action to correct the condition.
The contivity is a very easy box to configure and DNS is no exception. Just point it to the DNS servers on your private network so VPN clients have name-resolution when connecting to your internal LAN.
Regards,
maj.